Mechanism of Asphalt Binder Aging by Ultraviolet Irradiation and Aging Resistance by Adding Carbon Black

Reinforcing Effects of Carbon Black on Asphalt Binder for Pavement

“…On the contrary, absorption of light components by carbon black may have caused the increase of critical strain in this study. In a previous paper 5) , we confirmed that the saturates among the chemical fractions of asphalt were the most sensitive to light (ultraviolet irradiation), and carbon black addition prevented photodegradation. Therefore, preferential absorption of light components by carbon black will contribute to the effective control of photodegradation.…”

アスファルトの光による劣化に及ぼす膜厚，波長ならびにカーボンブラック添加の影響

“…Carbon black 14) is well known as a weather- , Itaru NISHIZAKI 2) , Seishi MEIARASHI 2) , and Akihiro MORIYOSHI 3) proofing filler in the polymer industry. The present authors 11), 15) previously confirmed that carbon black hinders the ultraviolet degradation of asphalt materials. In this study, we examined the effects of adding carbon black on the depth of damage from light, and the degradation rate.…”

Effect of aging on morphology of organo-montmorillonite modified bitumen by atomic force microscopy

“…Many studies have shown that the high and low temperature properties of bitumen can be improved effectively by adding fillers, fibres, rubbers, resins and other additives (Adedeji et al , 1996; Johansson & Isacsson, 1998; Fawcett & Mcnally, 2000; Lu & Isacsson, 2001). However, there were relatively few reports on improving the aging resistance of bitumen (Yamaguchi et al , 2004; Ouyang et al , 2006). Most published studies reported on the aging process and mechanism of bitumen and polymer modified bitumen (Lamontagnea et al , 2001; Lu & Isacsson, 2002; Ruan et al , 2003; Cortizo et al , 2004).…”